With numbers in the wild dwindling rapidly, Chester Zoo's black rhino breeding programme is a key part of preserving the species. In this episode, black rhino Kitani is introduced to new mate Magadi, but with injury a high risk during mating, keeper Babs is concerned that Kitani may struggle to defend herself, since she lost her horn after the death of her calf. Meanwhile, there's a surprise birth in the orangutan house, and older sibling Tuti has to fend for herself and set out on the road to independence. Last in the series.